dpkg error preventing install or upgrade

[Masterjuggler]

I removed lite-software and tried installing again, same error. I removed it, gained the ability to upgrade everything else, tried installing it again, same error. I upgraded to Lite 3.2, and I'm still getting the same error. Lite-software opens successfully though, even after removing, so it has in fact installed.

I'm unsure if this is related, but for the past few weeks, I've been getting this error at the end of apt-get update:

Code:

Reading package lists... Done
Building dependency tree       
Reading state information... Done
All packages are up to date.
W: Invalid 'Date' entry in Release file /var/lib/apt/lists/partial/security.ubuntu.com_ubuntu_dists_xenial-security_InRelease
W: Invalid 'Date' entry in Release file /var/lib/apt/lists/partial/us.archive.ubuntu.com_ubuntu_dists_xenial-updates_InRelease
W: Invalid 'Date' entry in Release file /var/lib/apt/lists/partial/us.archive.ubuntu.com_ubuntu_dists_xenial-backports_InRelease
W: Invalid 'Date' entry in Release file /var/lib/apt/lists/ppa.launchpad.net_ubuntu-wine_ppa_ubuntu_dists_xenial_InRelease

I'm not getting these errors on another Lite 3.2 install I have on another computer. I've tried to research this update error before, but couldn't find anything that seemed to me to be relevant.